barker



YE. H. BARKER I April 19, 1932. DISPENSING TUBE Re. 18,433

Original "Filed Feb. 9, 1928 W 17 i 6 4 if z i" 5/ fi d I Z726 I d to- Retail led A 19,1932

" EUNI'TED, STATES] PATENTOFFICE I EDWIN BABKIR, OF MOYLAN, PENNSYLVANIA, ASSIGNOR TO A. H. W132, 1N0, O1

' CHESTER, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA msrnnsme runs Original No. 1,754,496, dated April 15,'198ll',8er1al No. 252,998, filed February 9, 1988. Application for reissue filed March 8, 1932; Serial No. 597,804.

My invention relates to dispensing tubes for use in dispensing shaving cream, tooth paste, cosmetics and the'liker Y A purpose of my invention is to use pa r 5 impregnated with a suitable waterproo ng filler such as bakelite lacquer, rubber, paraifin or oil for the body portion of a dispensing tube. Optionally I may useanyother suitable fibrous or other non-metallic flexible material than paper, for example fabric.

. A further urpose is to mold a dispensing terminal of akelite or optionallyof other suitable molding material around both the inside and the outside of the inwardly crim ed end of a dispensing tube of paper orot er suitable non-metallic flexible material and to use the progressively greater thickness of the paper toward the end'of the paper due tocrimping it inwardly to progressivelysmaller diameter for making an interlocking bond between thecrimped end of the paperand the enfolding molding material.

Further purposes will appear in the specification and in the claims.

I have elected to show one only of the difie'rent forms of my invention, selecting a form that is practical and efiicient in'operation and which well illustrates the principles involved.

Figure 1 .is a longitudinal elevation of a 8'0 finished dispensing tube embodying my invention. v

Figure 2 is a longitudinal section of Figure 1 taken in the plane of the drawings and showing in dot-and-dash the tube of Figure 1 supplied with a usual cap and a usual folded closure at'the filling end. Figure 3 is a longitudinal section of a tube of paper or other suitable non-metallic flexible material, for use in manufacturing thebody portion of my dis ensing'tube.

Figure .4 is a longitu mal section generally similar to Figure 3 but showing the dispenS- ing end of'the tube crimped inwardly preparatory to molding.

Figures 6 and '7 am sectional elevations through a conventional molding machine and illustrate difiere'nt steps of the molding of a oft etubeshowninFigure t x which the metal forming t e body portion Figurefiis'atop plan of 4.

g terminal on to the waterproofing material as alrea y de Like numerals refer to like parts in all figures. '1

Describing in illustration and not in limitationand referring to the'drawings In the past it has been customary to manufacture dis ensing'tubes by extrusion molding, the ha y' portion of the tube and its dis Eensing terminal being a single integral memer molded under great ressure, during of the dispensing tube and usuall tin, flows 'up around a moving die or man rel that is forcing its way into the tin or other metal molding material, within a stationary portion of the mold. One of the purposes of my invention is to use a less costly material for the manufacture of dispensing tubes that will be equally well adapted to meet the needs of service. I I have discovered that a body portionof paper or other suitable non-metallic flexible material impregnated with a waterproofing 'filler suchas oil, bakelite lacquer, paraflin' or rubber meets well the conditions of service and that the end terminal of the dis ensing 7i tube may be molded upon the inwar y bent end of a tubular body of paper or other suitable non-metallic flexible, material so as to give a dispensing tube that at once very satisfactory in use and inexpensive to manufacture. l p The finished dispensing tube proper comprises a tubular bodylO and a terminal 11 that has hitherto usually been made integral with the body. -A cap 12, of any. desired and suitable type is shown in dot-and-d'ash Figure 2, and will usually be supplied with the dispensing tube but does not have direct relevance to the present invention. A closure 13, also shown dot-and-dash in. Figure 2, is made by the customer after the I tube has been filled and also has. no direct.

' relevance to the present invention.

I show in Figure 3' an ordinary tube 1 t,

preferably of paper but permissibly of another" suitable non-metallic flexible material; The tube 14 has been suitably impre ated.

The first step in manufacturing my new tube is to inwardly crimp the dispensing end of the tube shown in Figure 3. This crimpwardly towar the tube axis as illustrated in Figure '4.

It will be evident that the inward crimping of the tube causes a progressive bunching of the material in the tube portions progressively nearer the tube axis so that the eflective thickness of the material in the crimped portion progressively increases from the beginning of the crimped end at 16 to its innermost edge at 17, the quantity of material around the small inner circle (Figure 5) at 17 being exactly the same as that around the outside portion of the tube at 16.

I mount the tube 14 on a metal die member 18, Figure 6, and place a suitable quantity of molding material 19 in a stationary mold 20 below andproperly alinedwith the movable die member. A

' The movable member is forced down under high pressureinto the molding material at a temperature appropriate to the material used. I thus cause'the molding material to enfold the crimped end of the tubeof paper or other suitable non-metallic flexible material. The molding material and the crimped end portion of the tube fill all of the space between the mating members of the mold when the movable member has been forced down into its lower-most position. In normal operation, using a lump of molding material in the bottom of the fixed die, the material will flow about and thoroughly face-or cover both sides of the crimped end. Bakelite is a very excellent plasticmolding material for my purpose but any other suitable material may be used.

To avoid any marked tendency for the extrusion molding to'force the end portionofthe tube outwardly ahead of the flowing molding material, I may mount a portion of the molding material in the form of an'annulus 21 placed inside the crimped end of the tube and about post 22, the remainder lying between the crimped end and the stationary mold.- I prefer to crimp the dispensing 'end of the tube at 15'before placing it on the movable die but optionally may crimp and mold with the same stroke of the die. I

The illustration of the molding members is intended to be a. conventional one for any suitable molding mechanism. A's illustrated, the stationary member 20 isprovided with a threaded portion at 23 to form the threadedend of the terminal. base member 24' is spring pressed at 25 into position to receive the end of the downwardly moving central post 22 of the die member. This supporting member is kept from mcving upwardly by a suitable collar 26 and is slidably mounted in a plate27 fastened rigidly to the bottom of thestationary mold.

When the lower end 22 .of the movable member engages the upwardly-pressing member 24, the latter member yields downwardly sufiiciently to permit the full down stroke of the moving die member. This-yielding prevents the pressure against the lower end of the moving member. from becoming unduly,

high.-

of the tube 14 which is left firmly imbedded in the molded terminal.

The lower and stationary molding member may or may not bedivided for more easy removal of the threaded terminal from its molded seat. Usually this member will be made in one piece in which event the tube will be spun out of thethread at 23.

T e upwardly directed and outwardly flaring portion 28 of the lower mold member will frequently be given a suitable lettering or' other marking in accord with the desires of the customer. In this event the lower mold member will be divided.

The dispensing .tubesare provided with suitable caps 12 of Figure 2- and sold with the charging end 13 open.

The customer fills the tube at the open end and subsequently folds the open end together as illustrated in dot-and-dash in Figure 2, in the usual way. This however, forms no part of the present invention which is directed at a two-part dispensing tube having a body portion made up of paper or other suitable fibrous or other non-metallic flexible material impregnated with suitable waterproofing material and a molded dispensing terminal enfolding the inwardly crimped end of the tubular body portion.

In view of my invention and disclosure variations and modifications to 'meet individual whimor particular need will doubtless become evident to others skilled in the art, to obtain all or part of the benefits of my invention without copying the structure shown, and I, therefore, claim all such'in so far as they fall within the reasonable spirit and sciipe of my invention.

' raving thus described my invention, what I- claim as new and desire to secure by Letters Patent is:

1. A two-part collapsible dispensing tube comprising a fibrous body portion and a dispensing terminal molded to one end thereof.

2. A two-part collapsible dispensing tube comprising "a fibrous body portion, an impregnating filler within the interstices of the material of the body portion to make said portion impervious to the tube contents, and a dispensing terminal molded to one end of the body portion.

3. A two-part collapsible dispensing tube comprising a pa er body portion and a dispensing termina molded to one end thereof.

. 75 The die member on its up stroke moves out 4. A two-part collagsible dispensing tube comprising a pa er bo y portion, an impregnating filler wit in the interstices of the material of the body portion to make said portion impervious to the tube contents, and a dis ensing terminal molded to one end of the body ortion.

5. collapsible dispensin tube comprising abody gortion of h rous material crimped inwar ly at one end, and a molded dis ensing terminal having a molded interloc ng bond with the inside and outside surfaces of the end. I

6. A collapsible dispensing tube comprising a tubular body having a conically inwardly extending section at one end that progressively increases in thickness of material inwardly from the outer portion of the conical section and a molded dispensing terminal engaging the inside and outside surfaces of the conical section and receiving an interlocking bond therewith by reason of the inward progressive increase in thickness.

7. A collapsible dispensing tube having the body and terminal separate, the body portion inwardly crim ed and thereby wedged with theebase of t e wedgevat the portion of smaller diameter and a terminal integral and of non-metal means for attaching a closure for the dis- 14. A collapsible tube comprising a tubu lar body of non-metallic flexible material having an end portion inwardl bent and crim ed and a one-piece terminal of plasticmol lng material havin parts minutely following the contour of t e inside and outside of the crimped end holding the crimped end between the parts, havin a discharge opening for the tube and a apted to receive a closure for the discharge opening. 15. A collalpsible tube consisting entirely c material and comprisin a flexible tubular body having an end port1on sloping toward the tube axis and a terminal of plastic-molding material secured to the end portion, lying wholly within the external diameter of the tubularbody and having a discharge opening for the tube. V

EDWIN H. BARKER.

side of the wedge shape end shoulder and permanently attached to it.

9. A collapsible'dispensing tube having a body portion of fibrous. material, a dis ensing terminal of bakelite molded to the ody portion and a ca for the terminal.

10. A collapsi 1e tube comprising a tubular body of non-metallic flexible material and anon-metallic terminal moldedto the body lar body of non-metallic flexible material, a- -waterproof coating on the body and a nonannularly around the end of the bod having a discharge opening for the tu and adapted to receive a closure for the discharge opening.

11. A collapsible tube comprising a tubumetallic terminal molded to the body annularly around the end of the body, having a discharge opening for the tube and adapted to receive a closure for the discharge openl2. A collapsible tube comprising a tubular vbody of nonametallic flexible material having an end portion which approaches the tube axis and a one-piece terminal which minutely follows the contour of the end portion of the body both inside and outside the body and which has a discharge opening and 

